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Temporary manual gear-shifting control method for automatic transmission under ramp condition

A temporary manual, control method technology, applied in the direction of transmission control, elements with teeth, belts/chains/gears, etc., can solve the problems of inability to meet the driver's driving needs, lack of availability, etc., to improve the power of uphill performance and downhill braking

Active Publication Date: 2019-08-02
CHINA FIRST AUTOMOBILE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The conventional temporary manual shift mode will exit within a certain period of time, and it does not have the function of maintaining power for a long time to go uphill or engine braking downhill, so it cannot meet the driver's needs for actual slope driving

Method used

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  • Temporary manual gear-shifting control method for automatic transmission under ramp condition
  • Temporary manual gear-shifting control method for automatic transmission under ramp condition
  • Temporary manual gear-shifting control method for automatic transmission under ramp condition

Examples

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Embodiment Construction

[0059] The present invention is described in detail below in conjunction with accompanying drawing:

[0060] image 3 It is the wire harness connection diagram of the shift paddle sensor and the transmission control unit in the embodiment of the present invention. Such as image 3 As shown, the signals of the paddle shift sensor 300 output the upshift paddle hard-wired signal TIP+ and the downshift paddle hard-wired signal TIP-, and the ports are connected to the A / D1 and A / D2 collection ports of the internal microprocessor 320 of the transmission control unit 310 ; The microprocessor 320 judges whether the driver dials the upshift paddle or the downshift paddle according to the change of the collected signal value. When the driver releases the upshift paddle or downshift paddle, the voltage of the acquisition port A / D1 or A / D2 is high level; when the driver presses the upshift paddle or downshift paddle, the voltage of the acquisition port A / D1 or A / D2 voltage is low leve...

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Abstract

The invention provides a temporary manual gear-shifting control method for an automatic transmission under a ramp condition. According to the temporary manual gear-shifting control method for automatic transmission under the ramp condition, an actual gear obtained through operation conducted on a gear-shifting sheet by a driver currently is compared with a theoretical gear calculated in an automatic gear-shifting ramp mode, and the intention of power uphill of the driver under the ramp condition and the intention of brake downhill of an engine are comprehensively judged according to the position of an accelerator pedal and the ramp mode; and when specific conditions are met, a corresponding counter stops temporarily to meet the requirement for power uphill of the driver or the requirementfor brake downhill of the engine; or, counting continues to be conducted, and when the corresponding counter reaches 0, a vehicle exits a temporary manual mode. By adoption of the temporary manual gear-shifting control method for the automatic transmission under the ramp condition, the requirement for power uphill of the driver and the requirement for brake downhill of the engine can be accuratelyjudged, and the vehicle is kept in the temporary manual gear-shifting mode and returns to an automatic gear-shifting mode at the proper time.

Description

technical field [0001] The invention belongs to the field of vehicle transmission control methods, and relates to a temporary manual shift control method of an automatic transmission for slope road conditions, which is suitable for drivers to perform temporary manual shift operations on slope road conditions, and satisfies the driver's need to maintain power for a long time It can automatically return to the automatic shift mode at an appropriate time to meet the needs of uphill or engine braking downhill. Background technique [0002] Automatic transmission (such as AT, DCT, CVT) is a device that automatically shifts gears according to the vehicle speed and the opening of the accelerator pedal. At present, most automatic transmissions support two modes of automatic shifting and manual shifting. Among them, the automatic shift is to automatically select the appropriate gear according to the opening of the accelerator pedal and the speed of the vehicle to meet the driver's ne...

Claims

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Application Information

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IPC IPC(8): F16H61/02F16H59/66
CPCF16H59/66F16H61/0204F16H2059/663F16H2061/0232
Inventor 赵令国刘国栋李翰博马岩唐忌李征白占海
Owner CHINA FIRST AUTOMOBILE
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